Reversible fiber connector with mechanical sliding splice

Abstract

A connector assembly for reversibly terminating an optical fiber comprises a housing having a cavity extending along a longitudinal axis. An elongate member having a groove extending along a surface thereof is provided within the cavity. An end portion of the fiber is aligned with a fiber stub within the groove such that the stub's splicing face is positioned opposite the fiber's splicing face. A splice anvil is mounted about the member with the anvil's clamping surface overlapping the abutting stub and fiber splicing faces. The clamping mechanism comprises step surfaces arranged along the member's surface adjacent the groove. When the anvil is moved from the released position to the clamped position, the anvil's inner surface is moved along the step surfaces in a direction perpendicular to the longitudinal axis towards the groove, the anvil's clamping surface bringing a clamping force to bear on the abutting fiber and fiber stub.

1. A connector assembly for reversibly terminating an optical fiber, the assembly comprising an elongate housing comprising a front end, a rear end and a cavity extending therebetween along a longitudinal axis, the assembly comprising:
 an elongate member mounted within the cavity and comprising a first end, a second end and an alignment groove extending along a first surface thereof between said first end and said second end, wherein an end portion of the optical fiber is positioned within said groove and extending from said second end, wherein an optical fiber splicing face of the optical fiber is positioned between said first end and said second end; 
 an optical fiber stub positioned within said groove and extending from said first end, wherein a stub splicing face of said optical fiber stub is positioned opposite said optical fiber splicing face; 
 a splice anvil slidably mounted about said elongate member adjacent said first surface for movement between a released position and a clamped position, an inner surface of said anvil comprising a clamping surface overlapping said stub splicing face and said optical fiber splicing face; and 
 a clamping mechanism comprising a plurality of step surfaces arranged along said first surface of said elongate member adjacent said alignment groove, wherein when in said released position said inner surface of said anvil cooperates with said plurality of step surfaces and wherein when said anvil is moved towards said first end from said released position to said clamped position, said movement gives rise to a corresponding movement of said inner surface of said anvil along said plurality of step surfaces in a direction perpendicular to the longitudinal axis and towards said first surface, said clamping surface of said anvil bringing a corresponding clamping force to bear on said optical fiber stub and the optical fiber. 
 
     
     
       2. The connector assembly of  claim 1 , further comprising a ferrule comprising a front face, a rear end positioned adjacent said first end of said elongate member, an axial bore aligned with said groove, wherein said optical fiber stub is disposed in said bore and extends from said front face into said groove. 
     
     
       3. The connector assembly of  claim 2 , wherein said elongate member is a ferrule holder. 
     
     
       4. The connector assembly of  claim 1 , wherein when in said released position, said clamping surface and said first surface are spaced for enabling said positioning of said end portion of the optical fiber and of said optical fiber stub within said groove. 
     
     
       5. The connector assembly of  claim 4 , wherein said groove comprises adjacent said first end of said elongate member a first groove portion for guiding said positioning of said optical fiber stub within said groove and said groove comprises adjacent said second end a second groove portion for guiding said positioning of said end portion of the optical fiber within said groove. 
     
     
       6. The connector assembly of  claim 5 , wherein said groove is substantially V-shaped and said first and said second groove portions are substantially funnel-shaped. 
     
     
       7. The connector assembly of  claim 1 , wherein said splice anvil is moveable from said released position to said clamped position by sliding said splice anvil about said elongate member along the longitudinal axis towards said first end, and further wherein said splice anvil is moveable from said clamped position back to said released position for reversibly terminating the optical fiber by sliding said splice anvil about said elongate member along the longitudinal axis towards said second end. 
     
     
       8. The connector assembly of  claim 1 , further comprising a slit sleeve spring mounted about said splice anvil for maintaining said clamping force to bear on said optical fiber stub and the optical fiber when said splice anvil is moved to said clamped position. 
     
     
       9. The connector assembly of  claim 1 , further comprising a projection extending away from said splice anvil for facilitating gripping thereof when moving said splice anvil. 
     
     
       10. The connector assembly of  claim 1 , further comprising a second splice anvil slidably mounted about said elongate member adjacent said first surface and adjacent said splice anvil along the longitudinal axis, an inner surface of said second anvil comprising a clamping surface overlapping said end portion of the optical fiber positioned within said groove. 
     
     
       11. The connector assembly of  claim 10 , wherein the optical fiber comprises a bare fiber coated by a buffered portion, and further wherein at said end portion said buffered portion is removed to expose said bare fiber, said clamping surface of said second anvil overlapping both said bare fiber and said buffered portion. 
     
     
       12. The connector assembly of  claim 10 , wherein when said second anvil is moved towards said first end to said clamped position, said movement gives rise to a corresponding movement of said inner surface of said second anvil along said plurality of step surfaces in said direction perpendicular to the longitudinal axis and towards said first surface, said clamping surface of said second anvil bringing a corresponding second clamping force to bear on said end portion of the optical fiber. 
     
     
       13. A method for reversibly terminating an optical fiber to an optical fiber stub, the method comprising:
 providing a connector assembly comprising
 an elongate housing comprising a front end, a rear end and a cavity extending therebetween along a longitudinal axis; 
 an elongate member mounted within said cavity and comprising a first end, a second end and an alignment groove extending along a first surface thereof between said first end and said second end; 
 a splice anvil slidably mounted about said elongate member adjacent said first surface for movement between a released position and a clamped position, an inner surface of said anvil comprising a clamping surface; and 
 a clamping mechanism comprising a plurality of step surfaces arranged along said first surface of said elongate member adjacent said alignment groove, wherein when in said released position said inner surface of said splice anvil cooperates with said plurality of step surfaces; 
 
 positioning an end portion of the optical fiber within said groove, said end portion extending from said second end and an optical fiber splicing face of the optical fiber being positioned between said first end and said second end; 
 positioning the optical fiber stub within said groove, the optical fiber stub extending from said first end, a stub splicing face of the optical fiber stub being positioned opposite said optical fiber splicing face, and said clamping surface of said anvil overlapping said stub splicing face and said optical fiber splicing face; and 
 moving said anvil towards said first end from said released position to said clamped position, said movement giving rise to a corresponding movement of said inner surface of said anvil along said plurality of step surfaces in a direction perpendicular to said longitudinal axis and towards said first surface, said clamping surface of said anvil bringing a corresponding clamping force to bear on the optical fiber stub and the optical fiber. 
 
     
     
       14. The method of  claim 13 , wherein said connector assembly comprises a ferrule comprising a front face, a rear end positioned adjacent said first end of said elongate member, an axial bore aligned with said groove, and further wherein positioning the optical fiber stub comprises disposing the optical fiber stub in said bore, the optical fiber stub extending from said front face into said groove. 
     
     
       15. The method of  claim 13 , further comprising moving said anvil from said clamped position back to said released position for reversibly terminating the optical fiber by sliding said anvil about said elongate member along said longitudinal axis towards said second end. 
     
     
       16. The method of  claim 13 , further comprising providing a second splice anvil and slidably mounting said second splice anvil about said elongate member adjacent said first surface and adjacent said splice anvil along said longitudinal axis, an inner surface of said second anvil comprising a clamping surface overlapping said end portion of the optical fiber. 
     
     
       17. The method of  claim 16 , wherein the optical fiber comprises a bare fiber coated by a buffered portion, and further wherein the method comprises, prior to said positioning said end portion of the optical fiber within said groove, removing at said end portion said buffered portion to expose said bare fiber. 
     
     
       18. The method of  claim 17 , wherein said clamping surface of said second anvil overlaps both said bare fiber and said buffered portion. 
     
     
       19. The method of  claim 16 , wherein when said second anvil is moved towards said first end to said clamped position, said movement gives rise to a corresponding movement of said inner surface of said second anvil along said plurality of step surfaces in said direction perpendicular to said longitudinal axis and towards said first surface, said clamping surface of said second anvil bringing a corresponding second clamping force to bear on said end portion of the optical fiber.